Extension of the FGM technique for autoignition and preferential diffusion effects

Ebrahim Abtahizadeh; R. Bastiaans; P. de Goey; J. van Oijen

Extension of the FGM technique for autoignition and preferential diffusion effects

Ebrahim Abtahizadeh, R. Bastiaans, P. de Goey, J. van Oijen

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Abstract

Flamelet Generated Manifolds (FGM) has been extended to account for preferential diffusion effects and autoignition. Such development is made in order to study stabilization mechanism of turbulent lifted CH4/H2 flames of the Delft JHC burner. In this burner, methane based fuel has been enriched from 0 to 25% of H2. The main stabilization mechanism of these turbulent flames is autoignition based on the formation of ignition kernels which is very challenging to model. Addition of hydrogen makes the modeling even more challenging due to preferential diffusion effects. The proposed FGM model is implemented in DNS of unsteady mixing layer and LES of lifted jet flames. It is revealed that the proposed model has the capability to accurately predict main features of CH4/H2 turbulent flames.

Original language	English
Publication status	Published - 2015
Event	International workshop on Model Reduction in Reacting Flows - Cottbus, Germany Duration: 28 Jun 2015 → 1 Jul 2015

Workshop

Workshop	International workshop on Model Reduction in Reacting Flows
Abbreviated title	IWMRRF
Country/Territory	Germany
City	Cottbus
Period	28/06/15 → 1/07/15

Bibliographical note

This was presented at the 5th International Workshop on Model Reduction in Reacting Flows (IWMRRF) held at the Brandenburg University of Technology in Cottbus, Germany.

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title = "Extension of the FGM technique for autoignition and preferential diffusion effects",

abstract = "Flamelet Generated Manifolds (FGM) has been extended to account for preferential diffusion effects and autoignition. Such development is made in order to study stabilization mechanism of turbulent lifted CH4/H2 flames of the Delft JHC burner. In this burner, methane based fuel has been enriched from 0 to 25% of H2. The main stabilization mechanism of these turbulent flames is autoignition based on the formation of ignition kernels which is very challenging to model. Addition of hydrogen makes the modeling even more challenging due to preferential diffusion effects. The proposed FGM model is implemented in DNS of unsteady mixing layer and LES of lifted jet flames. It is revealed that the proposed model has the capability to accurately predict main features of CH4/H2 turbulent flames.",

author = "Ebrahim Abtahizadeh and R. Bastiaans and {de Goey}, P. and {van Oijen}, J.",

note = "This was presented at the 5th International Workshop on Model Reduction in Reacting Flows (IWMRRF) held at the Brandenburg University of Technology in Cottbus, Germany.; International workshop on Model Reduction in Reacting Flows, IWMRRF ; Conference date: 28-06-2015 Through 01-07-2015",

year = "2015",

language = "English",

}

TY - CONF

T1 - Extension of the FGM technique for autoignition and preferential diffusion effects

AU - Abtahizadeh, Ebrahim

AU - Bastiaans, R.

AU - de Goey, P.

AU - van Oijen, J.

N1 - This was presented at the 5th International Workshop on Model Reduction in Reacting Flows (IWMRRF) held at the Brandenburg University of Technology in Cottbus, Germany.

PY - 2015

Y1 - 2015

N2 - Flamelet Generated Manifolds (FGM) has been extended to account for preferential diffusion effects and autoignition. Such development is made in order to study stabilization mechanism of turbulent lifted CH4/H2 flames of the Delft JHC burner. In this burner, methane based fuel has been enriched from 0 to 25% of H2. The main stabilization mechanism of these turbulent flames is autoignition based on the formation of ignition kernels which is very challenging to model. Addition of hydrogen makes the modeling even more challenging due to preferential diffusion effects. The proposed FGM model is implemented in DNS of unsteady mixing layer and LES of lifted jet flames. It is revealed that the proposed model has the capability to accurately predict main features of CH4/H2 turbulent flames.

AB - Flamelet Generated Manifolds (FGM) has been extended to account for preferential diffusion effects and autoignition. Such development is made in order to study stabilization mechanism of turbulent lifted CH4/H2 flames of the Delft JHC burner. In this burner, methane based fuel has been enriched from 0 to 25% of H2. The main stabilization mechanism of these turbulent flames is autoignition based on the formation of ignition kernels which is very challenging to model. Addition of hydrogen makes the modeling even more challenging due to preferential diffusion effects. The proposed FGM model is implemented in DNS of unsteady mixing layer and LES of lifted jet flames. It is revealed that the proposed model has the capability to accurately predict main features of CH4/H2 turbulent flames.

M3 - Paper

T2 - International workshop on Model Reduction in Reacting Flows

Y2 - 28 June 2015 through 1 July 2015

ER -

Extension of the FGM technique for autoignition and preferential diffusion effects

Abstract

Workshop

Bibliographical note

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